diff --git a/demo.ipynb b/demo.ipynb
index 80f506a..083c931 100644
--- a/demo.ipynb
+++ b/demo.ipynb
@@ -17,6 +17,7 @@
    "source": [
     "# Activate the MeshCat package, and import some other \n",
     "# useful functions\n",
+    "using Compat\n",
     "using MeshCat\n",
     "using CoordinateTransformations\n",
     "import GeometryTypes: HyperRectangle, Vec, Point, HomogenousMesh, SignedDistanceField\n",
@@ -335,7 +336,11 @@
     "# just simple boxes. Let's load a 3D mesh and visualize it:\n",
     "using MeshIO\n",
     "using FileIO\n",
-    "cat_mesh = load(joinpath(Pkg.dir(\"GeometryTypes\"), \"test\", \"data\", \"cat.obj\"))\n",
+    "if VERSION < v\"0.7-\"\n",
+    "    cat_mesh = load(joinpath(Pkg.dir(\"GeometryTypes\"), \"test\", \"data\", \"cat.obj\"))\n",
+    "else\n",
+    "    cat_mesh = load(joinpath(dirname(pathof(GeometryTypes)), \"..\", \"test\", \"data\", \"cat.obj\"))\n",
+    "end\n",
     "setobject!(vis, cat_mesh)\n",
     "settransform!(vis, LinearMap(AngleAxis(pi/2, 1, 0, 0)))"
    ]
@@ -399,7 +404,7 @@
    "outputs": [],
    "source": [
     "delete!(vis)\n",
-    "pointcloud = PointCloud([[x, 0 + 0.01 * randn(), 0.5] for x in linspace(-1, 1, 1000)])\n",
+    "pointcloud = PointCloud([[x, 0 + 0.01 * randn(), 0.5] for x in Compat.range(-1, stop=1, length=1000)])\n",
     "setobject!(vis[:pointcloud], pointcloud)"
    ]
   },
@@ -472,7 +477,7 @@
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "Julia 0.6.3",
+   "display_name": "Julia 0.6.4",
    "language": "julia",
    "name": "julia-0.6"
   },
@@ -480,7 +485,7 @@
    "file_extension": ".jl",
    "mimetype": "application/julia",
    "name": "julia",
-   "version": "0.6.3"
+   "version": "0.6.4"
   }
  },
  "nbformat": 4,
diff --git a/src/MeshCat.jl b/src/MeshCat.jl
index c826f6a..5c16500 100644
--- a/src/MeshCat.jl
+++ b/src/MeshCat.jl
@@ -7,7 +7,7 @@ import Mux
 import AssetRegistry
 using GeometryTypes, CoordinateTransformations
 using Rotations: rotation_between, Rotation
-using Colors: Color, Colorant, RGB, RGBA, alpha
+using Colors: Color, Colorant, RGB, RGBA, alpha, hex
 using StaticArrays: StaticVector, SVector, SDiagonal
 using GeometryTypes: raw
 using Parameters: @with_kw