With only this and color picker enabled, on a fresh save with all techs, I can't find the recipe. This is on 0.14.13

Same problem here. No solution yet?

Does this happen on a new world? or loading the mod into existing world with all tech researched.

I will try and look into it tonight

I figured it out - it works, it's just that it works in a profoundly unintuitive way. It hides the lamp recipe and replaces with with an identical-looking one, both sprite and icon.

I'd really suggest not tampering with vanilla recipes, and making some distinguishable graphics - even if they're just placeholders.