Five Tubes, Dead Shadows and a Plastic Bag Stealing the Eye
Tobias is painting an A2 gouache of a covered market in Windhoek for the theme 'People at Work'. The school's paint order never arrived, so he has exactly five tubes: ultramarine, burnt sienna, yellow ochre, titanium white and ivory black. Ninety minutes remain before the work must be fixed and handed in. Three problems are visible from two metres away. The shadows under the corrugated iron roof have gone to a flat blue-grey that reads chalky and separate from everything around it. Every awning along the row sits at the same mid-value ochre, so the stalls flatten into one horizontal band. And the brightest, hardest-edged passage on the sheet is a white plastic bag in the bottom-right corner - the eye lands there first and stays. The vendor in a red overall is meant to be the subject. The marking notes for this paper ask for 'a clear focal point supported by colour and tone' and 'evidence of a deliberate colour scheme'.
1. Diagnose why the shadows have gone dead, and give a mixing method using only the five tubes that produces shadows which still carry colour.
Read the worked answer
Two separate failures are being confused here.
First, the mixture. Ivory black with white makes a neutral grey with almost no hue. It has nothing in common with the ochre and sienna around it, so it sits on the painting like a hole rather than a shadow. Black is also a blue-leaning black, which is why the result reads cold and chalky at the same time - an impossible combination that reads as dirt.
Second, the application. If that grey is brushed wet into a warm underpainting, gouache reactivates the layer below and the two mix on the paper. That is what mud actually is: not a bad colour but an uncontrolled mixture.
The method with five tubes:
- Ultramarine + burnt sienna are near-complements. Mixed, they neutralise toward a chromatic dark - a brown-violet that still belongs to the picture. This is the workhorse shadow.
- Ratios do the work. 3:1 blue-heavy gives a cool violet-grey for sky-bounce under the iron. 1:1 gives a warm brown-grey for shadow on skin and earth. 1:2 sienna-heavy, plus a touch of ochre, gives warm darks near the ground.
- White only for reflected light, never in the core of the shadow - white is what kills the colour.
- Black stays in the tube, or is used as a few drops into ultramarine for the deepest accents, never straight.
- Layer dry. Mix on the palette, let the shadow shape dry, then lay the opaque passage over it.
If mud is already there, lift it with a damp flat brush and blot - then repaint dry-to-dry.
2. Set out how he rebuilds the focal point on the vendor and demotes the bag, ordered by what changes the reading fastest.
Read the worked answer
The eye goes to three things: highest value contrast, highest chroma, hardest edge. The bag wins all three at once, so fixing only one will not move it.
Order of operations, fastest first:
- Kill the bag (2 minutes). Overpaint it as one flat shape at the value of the ground behind it. No detail, no highlight, no outline. This is the cheapest change with the largest effect.
- Build the value structure of the vendor. The red overall should be the darkest saturated note on the sheet; the shirt or face the lightest. Place those two values adjacent so they share a boundary. A focal point is a contrast, not a subject.
- Control the edges. Hard edges at the vendor's hands and face; soft, lost edges on the awnings, the background figures and the roof line. Edge quality is the cheapest way to buy recession.
- Reiterate the accent. Two or three small red touches elsewhere - a bucket, a scarf, a painted sign - so the eye travels out and is led back. One red note alone is stranded.
- Step the surrounding stalls down one value. Not darker everywhere, just less contrasty, so the figure separates without being outlined.
What he must not do: add more objects to compete, outline the figure, or repaint the whole background. With 90 minutes, every change has to buy a reading.
3. The awnings read as one flat band. Using temperature and value only - no new tubes - how does he separate the stalls, and how would he word the colour scheme in an annotation?
Read the worked answer
Separation without new colour is a job of ratio, not addition.
- Vary the ochre by shifting the second colour. Ochre + a little ultramarine gives an olive-green; ochre + sienna gives a warm tan; ochre + a lot of white + a touch of ultramarine gives a pinkish grey. Three stalls, three distinct notes, all from one tube of yellow ochre.
- Alternate warm and cool along the row. Two adjacent warm awnings will always merge, whatever their value. Warm advances, cool recedes - that alternation reads as depth even when the drawing is flat.
- Use the shadow band as the separator. Each awning needs its own shadow underneath. That dark strip is what makes a shape read as a projecting plane rather than a stripe of colour.
- Apply atmospheric perspective. The furthest stalls lose chroma and value contrast; the nearest stall gets the strongest value jump and the hardest edge. Distance is a reduction, not a colour.
Annotation wording (short, specific, and defensible): 'Limited palette of yellow ochre, burnt sienna and ultramarine, with red as the single complementary accent at the focal point. Stalls separated by temperature alternation rather than by adding hues; background keyed down in chroma and contrast to push the vendor forward.'
That wording names the scheme, names the device, and states what the device is doing - which is what 'evidence of a deliberate colour scheme' actually means.