IMHO, these are the best colors for the E30:
1: ALPINE WHITE: easy to care for if you use a good quality clearcoat.
2. ROSSO RED: must use UV clearcoat or else it will turn pink in 12 mnths, needs attention, must be waxed regularly
3: JET BLACK: nice to look at, menacing looks but a nightmare when it comes to maintainence
4. BRILLIANT SILVER: classic look, easy maintainence
5: TITANIUM GRAY: classic look, easy maintainence