There's really no need to match the color of the high beams to the low beams, since the high beams shouldn't be on when other drivers can see them. 9011 HIR can easily be installed in place of the 9005 bulb. They're significantly brighter (2300 lumens instead of 1700 lumens), while maintaining the same filament position and beam pattern.
I wouldn't recommend the Silverstars (or any other blue-tinted bulb). The blue coating reduces the output. To compensate they used a higher-output filament, which has a much shorter life span. I've used Silverstars in the past, and they've always blown sooner than any other bulb I've used.
In the foglights, HIDs will cause way too much glare to be used safely. There's no need to have foglights on in clear weather, but if you want to colormatch them to your headlights for looks I'd recommend LED. While still not legal, most drop in LED bulbs aren't bright enough to cause significant glare. However, most LEDs are around 6000K or higher, which will look blue compared to stock HIDs (around 4300K).