# 03-recolour

<<you>>
I took ten points in the card. Now recolour it in terracotta, cream and a deep green instead of cobalt and saffron — but don't change the geometry at all, and prove that you didn't.
<<progress>>
Starting AI conversation
<<progress>>
Waiting for model
<<ai>>
<<model:{"provider":"openai","requestedModel":"gpt-6.1-sol","responseModel":"gpt-6.1-sol"}>>
I’ll change only the color literals: cobalt to terracotta, ivory to cream, and saffron to deep green. Then I’ll compare the geometry fields before and after to verify they are identical.

<<progress>>
InspectStackSLStudy finished (1 ms)
<<progress>>
SetStackSLNumbers finished (1165 ms)
<<progress>>
RunToolProgramRequest finished (5986 ms)
- ✓ `CompareStackSLStudy` `{"beforeRevision":"r3-7837e20bb90d","afterRevision":"r4-0965f8e07715","beforeSta` — 1699 ms
- ✓ `CompareStackSLStudy` `{"beforeRevision":"r3-7837e20bb90d","afterRevision":"r4-0965f8e07715","beforeSta` — 1444 ms
- ✓ `CompareStackSLStudy` `{"beforeRevision":"r3-7837e20bb90d","afterRevision":"r4-0965f8e07715","beforeSta` — 832 ms
- ✓ `CompareStackSLStudy` `{"beforeRevision":"r3-7837e20bb90d","afterRevision":"r4-0965f8e07715","beforeSta` — 861 ms
- ✓ `CompareStackSLStudy` `{"beforeRevision":"r3-7837e20bb90d","afterRevision":"r4-0965f8e07715","beforeSta` — 921 ms

program ok: 5 call(s), 0 failed, 5985 ms
<<progress>>
Waiting for model
<<progress>>
Completed
<<ai>>
<<model:{"provider":"openai","requestedModel":"gpt-6.1-sol","responseModel":"gpt-6.1-sol"}>>
_r4-0965f8e07715: frames at 0.00 s; second row r3-7837e20bb90d, third row the difference_

![tool image](images/d73848bbbd0e99d7763d.png)
<<ai>>
<<model:{"provider":"openai","requestedModel":"gpt-6.1-sol","responseModel":"gpt-6.1-sol"}>>
Recolored your **ten-point** design:
- **Terracotta** rosettes and diamonds
- **Cream** ground and inset stars
- **Deep green** centers
- Original dark grout retained

**Geometry proof:** only 15 RGB channel values changed—no coordinates, shape formulas, thresholds, spacing, or grout widths.

Compared the adopted version (`r3`) against the recolor (`r4`):

| Geometry field | Maximum difference |
|---|---:|
| Tile coordinates | 0 |
| Ten-point star field | 0 |
| Outer edge | 0 |
| Center octagon | 0 |
| Corner diamonds | 0 |

Each comparison covered 36,864 sampled pixels, with **zero changed samples**. Compilation passed, and I visually checked the recolored preview.