Vestment colours depend where you serve. For example some Churches use black for all week day services in the Great Fast.
In my Church we tend to use Red for the fast periods, so Gold and Red are the most popular colours followed by White. I would suggest first to discuss with your Priest before you make any purchases, otherwise you may buy an expensive vestment that you only wear once or twice a year.
And, of course, it depends on liturgical traditions too. Black vestments are foreign to the Greek tradition, for example - even though we insist on wearing black cassocks and the like, there are a number of Greek clergy and hierarchs who have commented that black is a completely inappropriate color for vestments, and I've seen in a few rubric-oriented books that Greek clergy should never own or wear black vestments.
I understand, arimethea. I'm just interested to know what options there are.
What would I need for Russian practice vs. Greek (antiochian/GOA/ACROD) practice You would need to go to seminary first and, then be of an acceptable age for ordination before you start concerning yourself with what kind of vestments you need.
Besides the point of, "Make sure you need them before you think of them," there is also a thought that your preparation time would be better spent on other pursuits - studying liturgics, patristics, building your spiritual life, etc. We're not implying that you haven't done it, but we're just reinforcing that vestment selection and price are at the bottom of the "I should worry about this before ordination" list.