Hi Boschwayne,
Firstly, where are you from? I find in the south east a lot of the curries are a red/orange/yellow colour. The only time I find a brownish colour in a curry is when meat is used rather than chicken or prawn. (i.e. meat bhuna, lamb madras etc).
Food colouring plays a big role in Indian restaurant cooking depending on the region and customers expectations.
Personally, I wouldn't worry about colouring at this stage if you are just starting off. The key is to get the flavour right to suit you're palate by experimenting with all that's available to you on this forum in terms of taste, texture and the right consistency for each dish that you would buy from a restaurant. When you have exactly what you love, then start exploring further with colour. Don't be put off with the colour of what you are producing right now.
Enjoy you're exploration and have fun with this
