It won't look silly a few years from now. There are certain colours and designs that don't age poorly. Rich primary colours (red, royal blue, gold) never look bad. Minimalist design doesn't grow old. The designs that look poor are those that go with colours that fade in and out of favor (orange, brown) and designs with a lot of non-classic stuff happening (60s bubbles and circles, etc). Sleek doesn't grow old, though.