Export very low bitrate for white video

hi,
I have a 5-minute video of mostly white background with only three lines of blue text in the begining. I've exported from Premiere using Vimeo's HD preset. The file has a datarate of 65kbps, which is too low for Vimeo to flag it as HD. So my video looks like crap on vimeo. I've tried customizing it using both VBR 2-pass, VBR 1-pass, and CBR but the same low datarate is the result.
link to vimeo video: https://vimeo.com/85604773
I understand that since the video is mostly white background therefore there isn't alot of image information to get a higher datarate but I really need the white background.
Is there a way to force premiere to give the video a higher datarate, like 8000kbps?
The export setting is
Vimeo HD preset
thanks in advance,

Text were prepared using photoshop and then layer imported into premiere for overlaying.
Yep, I re-uploaded the same 65kbps video and somehow vimeo accepted it as HD. The text is better than before. I can work with this.
Another nuissance is the white in the vimeo video is 255 254 255.
In Premiere, the white background is 255 255 255. Anywway to keep it 100% white on vimeo? you know? maybe it's vimeo's re-processing.
peace, thanks

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Most Frequently Used: 100% 178377291 (mfu) [ Frequent Customer ]
Most Recently Used Ghost: 0% 0 (mru_ghost) [ Return Customer Evicted, Now Back ]
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Prefetch Data: 8% 14640256
Demand Metadata: 33% 58571606
Prefetch Metadata: 0% 540870
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Prefetch Data: 58% 92853092
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Kernel 839647 3279 20%
ZFS File Data 16542 64 0%
Anon 28776 112 1%
Exec and libs 1514 5 0%
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