Description of problem:
A validation error for invalid value to parameter is not displayed clearly in Host-> Parameter tab specially in red colour as it does in Puppet class parameter.

First of all I thought there is no Error only. But later realized that its there but not clear.

Version-Release number of selected component (if applicable):
foreman-1.11.0-0.develop.201511051605gitbd71155.el6.noarch

How reproducible:
Always

Steps to Reproduce:
1. Override a puppet class parameter in Host->Parameters tab.
2. Set the invalid value for parameter.
3. Observe the Error dialog for invalid value.

Actual results:
The error dialog displayed but its not clear enough. Displays in Gray colour looks faint.

Expected results:
The error dialog should be clearly visible and should be in Red Colour.