diff --git a/test/prsim_plot.py b/test/prsim_plot.py
index bc412c9..6e57e4d 100755
--- a/test/prsim_plot.py
+++ b/test/prsim_plot.py
@@ -30,6 +30,21 @@ Use -exclude='regex' to specify signals to exclude (or -ex).""")
 	entries = re.findall(r"\t *(\d+) ([^:]+) : (\d)(  \[by.+\])?[\n\r]", f)
 	assert len(entries) >= 1, "Could not find signal info in prsim.out!"
 
+	# Check if user gave a colour specification
+	colour_undefined = (255,0,0)
+	colour_high = (252, 186, 3)
+	colour_low = (20, 184, 186)
+	for arg in argv:
+		r = re.findall(r'-c=(.+)', arg)
+		if len(r) >= 1:
+			if r[0] == "michele":
+				colour_undefined = (100,100,100)
+				colour_high = (105, 204, 86)
+				colour_low = (209, 86, 48)
+			else:
+				raise Exception("Unknown colour given. I cba to code up general colours atm.")
+
+
 	# Check if user gave an include filter
 	include_given = False
 	include_re = None
@@ -104,11 +119,9 @@ Use -exclude='regex' to specify signals to exclude (or -ex).""")
 
 	# Plot
 
-	colour_undefined = (255,0,0)
-	colour_high = (252, 186, 3)
-	colour_low = (20, 184, 186)
-
-	fig = plt.figure(figsize = (num_sigs/3+4,num_times/3+4), dpi = 100)
+	# Generate figure
+	# weird sizing is to try to keep "pixel" sizes approx const
+	fig = plt.figure(figsize = (num_sigs/3+0.5,num_times/3+0.2), dpi = 100)
 
 	image = np.zeros((num_sigs, num_times, 3), dtype = int)
 	image[signals_matrix == 0] = colour_undefined
@@ -159,6 +172,9 @@ Use -exclude='regex' to specify signals to exclude (or -ex).""")
 			plt.arrow(t0, s1, 0, s0-s1 + 0.2*np.sign(s0-s1), head_width = 0, width = 0.2, ec = "none", lw = 0, fc = "black", length_includes_head = True)
 			plt.scatter((t0),(s0), c = "black", s = 30)
 	
+	# Write times on x axis
+	for time in unique_times:
+		ax.text(time_to_index(time), num_sigs, time, ha = "center", va = "top", size = 10, rotation = 90)
 
 	output_type =  ".pdf"
 	for arg in argv: