changing border color of active window to blue and window border to 2

Summary: The border of active window was change to blue t avoid confusion of title bars. Also border was made thicker so it's easier to grab it.

Test Plan: check color and broser sieze of active window

Reviewers: wxl, tsimonq2

Reviewed By: wxl, tsimonq2

Differential Revision: https://phab.lubuntu.me/D18

debian/changelog

@@ -1,3 +1,10 @@
+lubuntu-artwork (1.8) cosmic; urgency=medium
+
+  * Changed active window border to light blue.
+  * Increase window border so it is easier to grab.
+
+ -- Hans P. Möller <hmoller@gmail.com>  Thu, 27 Sep 2018 16:01:47 -0300
+
 lubuntu-artwork (1.7) cosmic; urgency=medium
 
   [ Wendy Hill ]

src/usr/share/themes/Lubuntu Arc/openbox-3/themerc

@@ -18,7 +18,7 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 ### WINDOW
-border.width: 1
+border.width: 2
 
 window.client.padding.width: 0
 window.client.padding.height: 0
@@ -27,7 +27,7 @@ window.handle.width: 0
 padding.width: 4
 padding.height: 4
 
-window.active.border.color: #2d3036
+window.active.border.color: #5294e2
 window.inactive.border.color: #2d3036
 window.active.title.separator.color: #2f343f
 window.inactive.title.separator.color: #2f343f