[Yoherz]

Sounds good. That's probably the best colors for you right now anyways.
That, and that the YouTube videos are a LOT easier to understand if you have the cards in hand.

Oh and a warning. NEVER try a rainbow deck. Those decks use every color card and are often anywhere from 100 to 500 cards in size. It's very hard to get the mana you need and is useless unless you have the only rainbow card in the game.
On a similar note, try to avoid using more than two colors. Three or more colored decks often have problems with either getting the right color mana, or even getting the wrong creatures at the wrong times.

Oh and one last thing. Try to get single colored decks from now on. That way, if you find two colors you like, you can try mixing them rather than two colors going off only one creature type (such as a green/black elf deck that I recently got where I'm only able to use the green side effectively). It makes the cards much more malleable since they'll usually have costs like 3R instead of 1RRR in which the latter requires that at least three red mana and one mana of any color to be spent to play it, as opposed to only one red required and the rest can be any other color in the first example.