Five ways to liven up dice:
-change the dot's shape. Who says that they have to be round? (by the way, I think the little white pixel in each dot looks really bad and lonely too.....maybe add some aa to it or base it more on the shading)
-change the color (as seen above). Dice are always white. also, there are alot of translucent ones.
-lose the dots altogether. Many DnD dice do not have the dots, but instead, the number written out. This, of course, leaves it open to mess around with the 'font' of the numbers and location and such.
-the dots don't have to be in the same patterns as conventional dice, and they don't have to take up as much space. (pretty self explainatory)
-the shape of the die itself. Of course, if you want the dice to be fair, you make all the sides equal, but if you want them to look cool, you could warp each side into different 4 sided shapes, such as a rectangle or a diamond.