For a play I once had to dye a pair of pants to match a cream-coloured jacket. I had read that regular tea gives a reddish-brown colour to the fabric, not cream. So I used a mixture of about 2 parts orange pekoe, and one part green tea. This made it a lovely cream colour. So I say grab some scraps of your fabric, some different colours of tea, and experiment until you find a colour you like.

Or, just use a watered-down fabric dye in a colour you want.