This problem is still present in latest beta (see attached). I was unable to identify the cause.
Please fix this. Bibliographies are somewhat unusable with coloured links right now.

On Mon, 2017-05-08 at 09:43 +1200, Henri Menke wrote:
> Dear list,
> 
> I reported this already some time ago but apparently it went unnoticed.
> 
> https://mailman.ntg.nl/pipermail/ntg-context/2016/086227.html
> 
> When you place hyperlinks in the bibliography the colour »spills over«,
> see MWE below.  The link is only on the string `Phys. Rev. 140
> A1133–A1138 (1965)` but the whole line is coloured.
> 
> Cheers,
> Henri
> 
> ---
> 
> \startbuffer[references]
> @article{Kohn1965,
>   title = {Self-Consistent Equations Including Exchange and Correlation
> Effects},
>   author = {Kohn, W. and Sham, L. J.},
>   journal = {Phys. Rev.},
>   volume = {140},
>   issue = {4A},
>   pages = {A1133--A1138},
>   numpages = {0},
>   year = {1965},
>   month = {Nov},
>   publisher = {American Physical Society},
>   doi = {10.1103/PhysRev.140.A1133},
>   url = {https://link.aps.org/doi/10.1103/PhysRev.140.A1133}
> }
> \stopbuffer
> 
> \setupinteraction[state=start]
> 
> \usebtxdataset[references.buffer]
> \usebtxdefinitions[aps]
> 
> \starttext
> 
> \nocite{Kohn1965}
> \placelistofpublications
> 
> \stoptext