A little while ago I made a piece of art where I experimented with starting in greyscale and transitioning to colour.
I found the process a bit tedious but I gave it another shot. I gave the colour treatment to another piece of mine where I experimented with a greyscale/colour mix.
The biggest problems with working with grey for me is inaccurate colours. When working with colour whatever I pick on the colour wheel is applied to the piece.
With greyscale on the other hand, the colour varies with the value applied. There are times when I have a colour in mind but can't achieve it. It's a bit frustrating when you want to apply red but what you get instead is pink.
- Autodesk Sketchbook
Image credits @jacksondavies