FEATURE: RGB value shown when sampling with the White Balance picker #1768

Feature Description

Feature Description

When using the White Balance picker (eyedropper) to sample a neutral point, display the RGB value of the sampled pixel alongside the resulting Temperature/Tint values — e.g., as a small readout or tooltip near the cursor or in the Color panel at the moment of clicking.

Why this matters

Right now there's no way to verify whether a sampled point is actually neutral (R≈G≈B) or too close to clipping (channels near 0 or 255), both of which affect how reliable the auto white balance result is. Seeing the RGB value would let users:

Confirm the point they picked was a good, unclipped neutral before trusting the result
Compare multiple candidate spots quickly (e.g., "128,130,125" vs "60,90,140") to pick the most neutral one
Understand why a pick gave a weird result, instead of just trial-and-error clicking around

Additional Context

Doesn't need to be a full live-hover readout across the whole canvas — scoping it to just the moment of WB-picker sampling would already solve the main use case and is a smaller lift.

Similar feature requests

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