UI improvement: Color of strings "Saving game" and "Loading game" in battlescape.

Changed color when uses quick save/load in battlescape. Looks native-like.

Before:
![clipboard05](https://f.cloud.github.com/assets/3616568/1277150/7d7ad150-2eaf-11e3-9ec1-1964cd69499c.png)

After:
![clipboard06](https://f.cloud.github.com/assets/3616568/1277151/894a619e-2eaf-11e3-9f56-c42184292647.png)