diff --git a/bin/user/historygenerator.py b/bin/user/historygenerator.py
index 87bef63..3c2a8c3 100644
--- a/bin/user/historygenerator.py
+++ b/bin/user/historygenerator.py
@@ -338,14 +338,14 @@ def _colorCell(self, value, format_string, cellColours):
 
         value: Numeric value for the observation
         format_string: How the numberic value should be represented in the table cell.
-        cellColours: An array containing 3 lists. [minvalues], [maxvalues], [html colour code]
+        cellColours: An array containing 4 lists. [minvalues], [maxvalues], [background color], [foreground color]
         """
 
         if value is not None:
             cellText = "<td"
 
             for c in cellColours:
-                if (value >= int(c[0])) and (value <= int(c[1])):
+                if (value >= float(c[0])) and (value <= float(c[1])):
                     cellText += " style=\"background-color:%s; color:%s\"" % (c[2], c[3])
 
             formatted_value = format_string % value
diff --git a/skins/Bootstrap/skin.conf b/skins/Bootstrap/skin.conf
index 174bd51..f7a475b 100644
--- a/skins/Bootstrap/skin.conf
+++ b/skins/Bootstrap/skin.conf
@@ -362,9 +362,9 @@
     # fontColours = foreground colour [optional, defaults to black if omitted]
 
     # Default is temperature scale
-    minvalues = -50, -10, -5, 0, 5, 10, 15, 20, 25, 30, 35
-    maxvalues =  -10, -5, 0, 5, 10, 15, 20, 25, 30, 35, 60
-    colours =   "#0029E5", "#0186E7", "#02E3EA", "#04EC97", "#05EF3D2", "#2BF207", "#8AF408", "#E9F70A", "#F9A90B", "#FC4D0D", "#FF0F2D"
+    minvalues = -50, -10, -5, 0,  5, 10, 15, 20, 25, 30, 35
+    maxvalues = -10, -5,   0, 5, 10, 15, 20, 25, 30, 35, 60
+    colours =   "#0029E5", "#0186E7", "#02E3EA", "#04EC97", "#05EF3D", "#2BF207", "#8AF408", "#E9F70A", "#F9A90B", "#FC4D0D", "#FF0F2D"
     fontColours =   "#FFFFFF", "#FFFFFF", "#000000", "#000000", "#000000", "#000000", "#000000", "#000000", "#FFFFFF", "#FFFFFF", "#FFFFFF"
     monthnames = Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec