Icons selection to use for action buttons

I would like to have an icon selector that can be used in active areas on watch face.

On my watch face, for example, I have ended up using letters like W for Weather, M for music, A for audio book player, D for dialler, T for text messaging etc. When symbolic icons would have been far neater and intuitive.

If icons were mono and vector based then users can pick colour and apply glow etc features as they like.