Split & format content in SP Note field

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CSS

jQuery

SharePoint

Hi,
I have a Note field which contains the data like
...
Test A: Result data a,result data
Test B: Result data C
Test C: Results A,results D
...

Now, the Test A: Test B:.. is fixed (as const) that but the result content is dynamic. the set of results (A,B,C) is stored in one (results) field which is Note Type.

my problem is to have it display like

Test A: Result data a,result data
Test B: Result data C
Test C: Results A,results D

i.e.
Test A,B,C: should be formatted differently. Is it possible with JQuery/CSS?

Now, if I still have to improve the problem explanation..
The entire content ( "Test A: results.. to Test C: results..") is in ONE field called TestResults, which is NOTE type in a List X. The problem is to add formatting (bold/color) only to "TEST A/B/C:" part of the content. I can do replace.("Test A:"," [b]Test A:[/b]") and change HTML of each item..

sounds possible?