Remove randomly changing colors

[svennam92]

I've had feedback that the random changing of colors on a refresh is confusing. This effect implies that a different version of the application is being hit, be it v1 or v2, or a different Kubernetes provider. However, this is not the case - it's just a randomization in the JS.

This commit does the following:

• removes random color changing
• uses blue for v2 and default beige for v1
  • this makes the changing of colors indicate something important when using traffic routing
• misc change: HTML header and title change "V1" to "v1" and "V2" to "v2" (consistency with folder structure)

[svennam92]

@duglin @linsun PTAL

[duglin]

LGTM thanks