Tinting a transparent PNG being used as a texture

I’m trying to tint a transparent png that I’m using as a texture on a mesh. If I try and tint by using setColor it tints the whole png including the transparency so it loses the “texture” (vertical bars). I tried turning on ofEnableAlphaBlending() but that doesn’t seemed to have helped. I have a feeling I’m missing something but couldn’t find any answers on the forum so any pointers would be appreciated.

Thanks!

Realised that when I add a colour to the vertex it actually tints the texture anyway leaving the alpha untouched.

I’ll get my coat.