Adding bold colons at end of bold row headings

[bertietheblue]

Hi

I wanted the bold row headings in my Word table (of which there are over 1,000), to end in a bold colon. Bold text is not used in the other columns, so:

Find: [any bold][end of cell marker]
Replace with [any bold][bold colon][end of cell marker]

I cannot locate a code for end of cell markers, so has anybody any idea how to do this?

Thanks
Bertie