fix: remove redundant text color style

from what I can tell it paints nicely, probably a left-over from
the Grapelli theme days

Author: asfaltboy

advanced_filters/templates/admin/advanced_filters.html

@@ -36,7 +36,7 @@ <h1>{% trans "Create advanced filter" %}:</h1>
 						<thead>
 							<tr>
 								{% for field in formset.fields %}
-									<th style="color: black;">{{ field.label|capfirst }}</th>
+									<th>{{ field.label|capfirst }}</th>
 								{% endfor %}
 							</tr>
 						</thead>

advanced_filters/templates/admin/advanced_filters/change_form.html

@@ -25,7 +25,7 @@ <h1>{% trans "Change advanced filter" %}:</h1>
 						<thead>
 							<tr>
 								{% for field in formset.fields %}
-									<th style="color: black;">{{ field.label|capfirst }}</th>
+									<th>{{ field.label|capfirst }}</th>
 								{% endfor %}
 							</tr>
 						</thead>
@@ -64,4 +64,4 @@ <h1>{% trans "Change advanced filter" %}:</h1>
 			</div>
 		{% endwith %}
 	</form>
-{% endblock content %}
+{% endblock content %}